1. Adaptation in natural and artificial systems;Holland,1975
2. Eberhart RC, Kennedy J. A new optimizer using particle swarm theory. In: Proceedings of the 6th international symposium on micro machine and human science, Nagoya, Japan; 1995.
3. Dorigo M. Optimization, learning and natural algorithms. PhD thesis, Dipartimento di Elettronica, Politecnico di Milano, IT; 1992 [in Italian].
4. A new heuristic optimization algorithm: harmony search;Geem;Simulation,2001
5. A novel heuristic optimization method: charged system search;Kaveh;Acta Mech,2010